Unit 5 Review (Open Up Resources) - Grade 7

1.

Multiple Select

3 mins

1 pt

Select ALL of the FALSE statements

5.5 - (-5.5) is equal to zero

-34 + 34 = 68

-4 + 1/2 is negative

-16/8 - (-2.6) is positive

-3.9 + 3.8 is positive

2.

Multiple Choice

3 mins

1 pt

Shirley has $530 in her bank account and buys a cell phone for $850. What is her new balance?

$1380

$320

-$320

-$1380

3.

Multiple Select

3 mins

1 pt

A submarine is descending 1,500 feet into the ocean. It takes the submarine 3 hours to make the descent. Write an equation to represent the relationship between the submarine's distance and time. Choose all that apply.

3f = 1500

3f = -1500

-1500 x 1/3= f

-1500/3 = f

1500 + (-3) = f

4.

Multiple Choice

3 mins

1 pt

Here is a set of signed numbers:

-19, 4.5, 2/3, 10, -0.6

If these numbers represent elevations in meters, which is the farthest away from sea level?

-19

4.5

2/3

10

-0.6

5.

Multiple Choice

3 mins

1 pt

Let x = -8/2 and y = -8/5. Which expression has a positive value?

x + y

x - y

y - x

y + x

6.

Multiple Choice

3 mins

1 pt

Solve the equation:

4/5z = -4

-5

5

-5/4

5/4

7.

Multiple Select

3 mins

1 pt

Select ALL of the choices that are equal to (-9) - (-18)

-9 + 18

-9 + (-18)

The difference between -9 and -18

The difference between -18 and -9

-9

8.

Multiple Choice

3 mins

1 pt

Miguel answered the following questions on his Unit 5 Assessment:

1) 5.6 x (-5.6) = 0

2) -9 + 9 = 0

Which answer do you agree with, if any?

Number 1

Number 2

Both

Neither

9.

Multiple Choice

3 mins

1 pt

Solve the equation:

-35 = -30 - b

-5

50

-1/5

5

10.

Multiple Choice

3 mins

1 pt

Which operations would make each equation true?

18 ____ 1/2 = 9

18 ____ -3 = -6

4 ____ -2 = 6

-12 ____ 3/4 = -11 1/4

A - Addition

S - Subtraction

M - Multiplication

D - Division

A, S, M, D

M, D, S, A

A, D, S M

D, S, A, M

11.

Multiple Choice

3 mins

1 pt

Gregory has a checking account at the local bank. If the account ever falls below zero, the bank deducts $4.50 per day until a deposit is made to bring the account above zero. Today, Gregory's account is -$3.65. What will his account balance be after 2 weeks if he makes no deposits or withdrawals?

-$66.65

$66.65

-$12.65

$12.65

12.

Multiple Choice

5 mins

1 pt

Randall has a fish tank that can hold up to 30 gallons of water but it is leaking at a constant rate. When Randall first notices the leak, the tank has 21 gallons of water. Two hours later the tank has 18 gallons. How many hours BEFORE Randall noticed the leak was the fish tank completely full?

2

4

6

8

13.

Multiple Select

3 mins

1 pt

Will Smith and his family are going on a hiking trip. They gained 128 feet during their hike and are currently at an elevation of 106 feet but they aren't sure of their starting elevation. Write and solve an equation to find their starting elevation. Choose ALL that apply.

e + 128 = 106; e = -22

e - 128 = 106; e = 22

106 - 128 = e; e = -22

106 + (-128) = e; e = -22

128 - 106 = e; e = 22

14.

Multiple Choice

3 mins

1 pt

A bird is flying above the ocean and a shark is swimming below the surface. The bird's vertical elevation is 15 feet and the shark's is -5.7. The equation 15 + d = -5.7 represents this situation. What value of d will make the equation true?

d = 20.7

d = 9.3

d = -9.3

d = -20.7

15.

Multiple Choice

3 mins

1 pt

Find the missing information for each account.

Account 1:

Old Account Balance: $437

Transaction Amount: -$289

New Account Balance: ?

Account 2:

Old Balance: ?

Transaction Amount: $95

New Account Balance: $23

Account 3:

Old Account Balance: -$559

Transaction Amount: ?

New Account Balance: $441

Account 1: $148

Account 2: $118

Account 3: $1000

Account 1: $726

Account 2: $72

Account 3: -$1000

Account 1: -$726

Account 2: $4.1

Account 3: $118

Account 1: $437

Account 2: $95

Account 3: $441

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